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hey wonder if any maths-y people can help me out - what does QED mean? it's been bugging me for ages! (as far as im concerned it means "go me! I finished the question!" )

Also when are you supposed to use it properly?

Also when are you supposed to use it properly?

it means "quod erat demonstrandum" - as has been shown. Although gcse latin sucked it had some purposes

sorry Nylex - am blind - didn't notice that you said whayt it actually meant.

Text_Box

It means "Finished, Phew!"

I got a bit carried away in my P3 and put it at the end of a question just to try and show that i knew what i was doing, u know, get halfway through your workings, get stuck, shove an equals in there and write the answer youve been told to show with QED underlined <grin>

Squishy

I usually put W^5 at the end of my proofs (Which Was What Was Wanted). Or just "as required"...I hate Latin, although my teachers showed us what QED was.

We use the tombstone symbol at the end of our proofs. I haven't had a lecturer who has put QED instead.

Maybe thats because the tombstone symbol was invented by a guy from Sheffield University.

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can someone please explain what principle domain is and why the answer is a not c?Maths

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